Adobe Systems Incorporated. The Photoshop, Illustrator, Reader, etc. people.
Agfaphoto.com The European photographic and imaging company.
The American Museum of Photography
American Photography: A Century of Images
Armed Forces Information Service, Defense Visual Information
ASMP, American Society of Media Photographers
B&H Photo/Video, Mail order and web source for photo supplies. (based in NYC)
bsimple.com, a site of beautiful, imposing, austere, and formal but subtilely emotional photographs by Misha Gordon.
Brooks Institute of Photography
Calumet Photographic, Mail order and web retail photo supplies. (based in Chicago)
CDW.com for computer hardware and software.
Center for Creative Photography, at the University of Arizona
Links to Civil War Photographs from the Civil War Center
Selected Civil War Photographs from the Library of Congress.
The Charles W. Cushman Photography Collection
Dan Heller's Photos of Africa, Examples of Photomontage included.
The Daguerreian Society has many examples of old and contemporary Daguerreotypes.
City Gallery.com, dedicated to older photography
Photography collection at The Denver Public Library
Gallery of Photography, Dublin, Ireland
Craig Goldwin (is a student of Jerry Uelsmann and) has a great site where he exhibits his photopaintings.
The Photographs of Lewis Hine (from the National Archives, child labor photos), Progressive, educator and photographer. The construction of the Empire State Building (from the New York Public Library. And more selections of child labor photos from the National Child Labor Committee at the National Archives.
A History of Photography by Robert Leggat
Light Impressions, archival photo supplies
The Maine Photographic Workshop Site
Masters of Photography, Links to lot of photographers
Masters of Photography Web Site for commercial sales of Fine Arts Photography.
MoPA, Museum of Photographic Arts
National Museum of Photography, Film and Television (In Great Britain)
NANPA, North American Nature Photographers Association
The New York Film/Video Council
New York Institute of Photography
New York New Media Association
Nikon USA, the home of Nikon Cameras in the US.
NPPA, National Press Photographers Association
Photography and Digital Imaging, Lots and lots of Links
The Photojournalists Coffee House
PhotoLinks, a great directory of links to places of interest for photographers
Another great resource from Adobe to get more from your Photoshop program is Photoshop Roadmap and this tutorials page from Photoshop Roadmap.
PMAI, Photo Marketing Association International
The Polaroid web site. The people who brought you instant photography.
PPA, Professional Photographers of America
Prints and Photographs Reading Room from the Library of Congress
Provident Camera Shop, downtown Cincinnati.
R.I.T, Rochester Institute of Technology
Smithsonian Institution, Office of Imaging, Printing and Photo Services
Sundance Institute, Sundance Film Festival
Taylor Photography, Wedding Photography Site
Military Veteran, Jim Pearsons Three Oaks Photography Web Site
Visit these sites for images and information about the Photographer Jerry Uelsmann (elsmann.net - his official site)
U.S. Department of Defense, AFRTS Radio News (Armed Forces Radio and Television Service), has some great news photos.
White House News Photographers Association